Complete circuitry is presented for the detection of the superconducting transition in powders, or specimens for which the standard four‐point resistance measurement cannot be performed. Specimens are placed within an inductance coil, and the change in the coil reactance is monitored as a function of temperature. The sensitivity is sufficient to detect the superconducting transition in 10−3 cm3 of lead, and only four integrated circuit packages are required.
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Research Article| August 08 2008
Circuitry for the contactless detection of superconducting transitions
Rev. Sci. Instrum. 49, 1716–1718 (1978)
Devlin M. Gualtieri; Circuitry for the contactless detection of superconducting transitions. Rev. Sci. Instrum. 1 December 1978; 49 (12): 1716–1718. https://doi.org/10.1063/1.1135355
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